Which of the following is the best explanation for the observation that females rarely get hemophilia?
Terms in this set (40) Which of the following is the best explanation for the observation that females rarely get the disease hemophilia? a female could get the disease only by having a mother who is a carrier and a father who has the disease.
Why is hemophilia more prevalent in males quizlet?
Why is hemophilia more prevalent in males? The defective gene is on the X chromosome; females have two copies, males only one hence the disease is more prevalent in males.
Who is more likely to have a Sexlinked trait?
Information. X-linked recessive diseases most often occur in males. Males have only one X chromosome. A single recessive gene on that X chromosome will cause the disease.
What is a change in a gene due to damage or being copied incorrectly called?
A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome is called. translocation. A change in a gene due to damage or incorrect copying is called. a mutation.
What happens to normal cells when their DNA is damaged?
But if the DNA damage occurs to a gene that makes a DNA repair protein, a cell has less ability to repair itself. So errors will build up in other genes over time and allow a cancer to form. Scientists have found damaged DNA repair genes in some cancers, including bowel cancer.
Can DNA repair itself if damaged?
Most damage to DNA is repaired by removal of the damaged bases followed by resynthesis of the excised region. Some lesions in DNA, however, can be repaired by direct reversal of the damage, which may be a more efficient way of dealing with specific types of DNA damage that occur frequently.
Can you damage DNA?
DNA can be damaged via environmental factors as well. Environmental agents such as UV light, ionizing radiation, and genotoxic chemicals. Replication forks can be stalled due to damaged DNA and double strand breaks are also a form of DNA damage.
Can u change your DNA?
DNA, serves as instructions for cells and is broken up into functional units called genes. Environmental factors can cause DNA to be temporarily modified, without changing the sequence, to alter how it is read. Epigenetics, meaning “attached to the DNA”, is the study of such modifications.
Can a person’s DNA change over time?
The letters of DNA that we are born with don’t change much over our lifetime. There is an occasional change but it is pretty rare. Methylation is thought to be a different matter though. Scientists think that methylation can change a lot in the DNA of any cell.
Can trauma change your DNA?
The findings, the authors concluded, supported an “epigenetic explanation.” The idea is that trauma can leave a chemical mark on a person’s genes, which then is passed down to subsequent generations. Instead it alters the mechanism by which the gene is converted into functioning proteins, or expressed.
Can DNA be changed from male to female?
Genetics overall cannot be changed (so far, at least) Sex chromosomes, in particular, determine whether someone will have female or male body parts. As you can see in the image below, these are chromosomes found in a typical person. We each have 23 pairs. The last pair are known as the sex chromosomes.
What causes transgenderism?
Transgender people have a gender identity that does not match their assigned sex, often resulting in gender dysphoria. The causes of transsexuality have been studied for decades. The most studied factors are biological, especially brain structure differences in relation to biology and sexual orientation.